Power splitter and satellite signal reception system

Abstract

The present disclosure provides a satellite signal reception system comprising a low noise block down-converter for receiving satellite signals; a plurality of receivers configured to transmit the satellite signals from the low noise block down-converter to a display device; and a power splitter. The power splitter includes a first port electrically connected to the low noise block down-converter via a single cable; a plurality of second ports electrically connected to the plurality of receivers; a signal-distributing circuit electrically connecting the first port to the plurality of second ports; a plurality of power-supplying circuits electrically connecting the plurality of second ports to the first port; and a command-transmitting circuit electrically connecting the plurality of second ports to the first port, wherein the command-transmitting circuit includes a controller unit programmed to forward DiSEqC commands from the plurality of second ports to the first port in a first-in-first-out manner.

What is claimed is: 
     
       1. A power splitter, comprising:
 a first port configured to receive satellite signals and a plurality of second ports, wherein the first port is electrically connected to a low noise block down-converter via a single cable; 
 a signal-distributing circuit electrically connecting the first port to the plurality of second ports; 
 at least one power-supplying circuit electrically connecting the plurality of second ports to the first port; and 
 a command-transmitting circuit electrically connecting the plurality of second ports to the first port, wherein the command-transmitting circuit includes a controller unit programmed to forward DiSEqC commands from the plurality of second ports to the first port in a first-in-first-out manner, 
 wherein the power-supplying circuit is physically and functionally independent from the signal-distributing circuit and command-transmitting circuit, the power-supplying circuit is independent from the command-transmitting circuit and the signal-distributing circuit is independent from the command-transmitting circuit. 
 
     
     
       2. The power splitter of  claim 1 , wherein the signal-distributing circuit comprises two inductors each having a first end connected to the first port and a second end connected to a resistor. 
     
     
       3. The power splitter of  claim 1 , wherein the signal-distributing circuit comprises a first level distributor electrically connected to the first port and two second level distributors electrically connected between the first level distributor and the plurality of second ports. 
     
     
       4. The power splitter of  claim 3 , wherein an input of the first level distributor is electrically connected to the first port, an input of the second level distributor is electrically connected to an output of the first level distributor, and an output of the second level distributor is electrically connected to one of the plurality of second ports. 
     
     
       5. The power splitter of  claim 1 , further comprising a plurality of DC blocking capacitors between the signal-distributing circuit and the plurality of second ports. 
     
     
       6. The power splitter of  claim 1 , wherein each of the plurality of power-supplying circuits comprises a filter and a diode connected in series. 
     
     
       7. The power splitter of  claim 6 , wherein the filter comprises an inductor and a capacitor connected in parallel. 
     
     
       8. The power splitter of  claim 1 , wherein each of the plurality of power-supplying circuits is electrically connected to the first port via an inductor. 
     
     
       9. The power splitter of  claim 1 , wherein an output of the controller unit is electrically connected to the first port via an inductor. 
     
     
       10. The power splitter of  claim 1 , wherein an input of the controller unit is electrically connected to one of the plurality of second ports via an inductor and a resistor in series. 
     
     
       11. A satellite signal reception system, comprising:
 a low noise block down-converter configured for receiving satellite signals from a satellite antenna, wherein the first port is electrically connected to a low noise block down-converter via a single cable; 
 a plurality of receivers configured to transmit the satellite signals from the low noise block down-converter to a display device; and 
 a power splitter, comprising: 
 a first port electrically connected to the low noise block down-converter via a single cable; 
 a plurality of second ports electrically connected to the plurality of receivers; 
 a signal-distributing circuit electrically connecting the first port to the plurality of second ports; 
 a plurality of power-supplying circuits electrically connecting the plurality of second ports to the first port; and 
 a command-transmitting circuit electrically connecting the plurality of second ports to the first port, wherein the command-transmitting circuit includes a controller unit programmed to forward DiSEqC commands from the plurality of second ports to the first port in a first-in-first-out manner, 
 wherein the plurality of power-supplying circuits is physically and functionally independent from the signal-distributing circuit and command-transmitting circuit, the power-supplying circuit is independent from the command-transmitting circuit and the signal-distributing circuit is independent from the command-transmitting circuit. 
 
     
     
       12. The satellite signal reception system of  claim 11 , wherein the signal-distributing circuit comprises two inductors each having a first end connected to the first port and a second end connected to a resistor. 
     
     
       13. The satellite signal reception system of  claim 11 , wherein the signal-distributing circuit comprises a first level distributor electrically connected to the first port and two second level distributors electrically connected between the first level distributor and the plurality of second ports. 
     
     
       14. The satellite signal reception system of  claim 13 , wherein an input of the first level distributor is electrically connected to the first port, an input of the second level distributor is electrically connected to an output of the first level distributor, and an output of the second level distributor is electrically connected to one of the plurality of second ports. 
     
     
       15. The satellite signal reception system of  claim 11 , further comprising a plurality of DC blocking capacitors between the signal-distributing circuit and the plurality of second ports. 
     
     
       16. The satellite signal reception system of  claim 11 , wherein each of the plurality of power-supplying circuits comprises a filter and a diode connected in series. 
     
     
       17. The satellite signal reception system of  claim 16 , wherein the filter comprises an inductor and a capacitor connected in parallel. 
     
     
       18. The satellite signal reception system of  claim 11 , wherein each of the plurality of power-supplying circuits is electrically connected to the first port via an inductor. 
     
     
       19. The satellite signal reception system of  claim 11 , wherein an output of the controller unit is electrically connected to the first port via an inductor. 
     
     
       20. The satellite signal reception system of  claim 11 , wherein an input of the controller unit is electrically connected to one of the plurality of second ports via an inductor and a resistor in series.